I'm looking for something like this:
I create one XThread field, dropbox with the following options:
[Maybe using Template Conditionals?]
If the user select the "Entry" option then the thread would be displayed with the PREFIXOFTHEFORUM_NEWTHREAD.... all using the CUSTOM templates.
If the user select the "Sticky" option then the thread would be displayed with the SHOWTHREAD.... all using the ORIGINAL templates.
In less words:
I need something/a way to select which thread will or not have the custom templates. 
Am I flying.. or is this possible? lol